pathencode: check result of .digest() method in sha1hash
Without this it was theoretically possible .digest() would fail and
return NULL but we wouldn't notice. Detected with cpychecker.
--- a/mercurial/pathencode.c Tue Aug 18 16:43:26 2015 -0400
+++ b/mercurial/pathencode.c Tue Aug 18 16:32:41 2015 -0400
@@ -684,6 +684,8 @@
hashobj = PyObject_CallMethod(shaobj, "digest", "");
Py_DECREF(shaobj);
+ if (hashobj == NULL)
+ return -1;
if (!PyString_Check(hashobj) || PyString_GET_SIZE(hashobj) != 20) {
PyErr_SetString(PyExc_TypeError,